Fig. 4From: Enrichment of the embryonic stem cell reprogramming factors Oct4, Nanog, Myc, and Sox2 in benign and malignant vascular tumorsRepresentative images of Sox2 staining in normal and vascular tumor tissues. Immunopositivity for Sox2 protein is represented by brown staining. Positive control (left panel) = rat brain; negative control (right panel) = rat brain with no added primary antibody. 400× total magnification for each imageBack to article page